| HBA／PET／HQ—TPA液晶共聚芳酯的合成与表征 |
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| 引用本文： | 陈延明,曹振林.HBA／PET／HQ—TPA液晶共聚芳酯的合成与表征[J].塑料工业,1995,23(5):8-10,7. |
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| 作者姓名： | 陈延明 曹振林 |
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| 作者单位： | 天津纺织工学院材料科学系 300160
(陈延明，曹振林，张志英)，天津纺织工学院材料科学系 300160(黄美荣) |
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| 摘 要： | 采用熔融缩聚方法合成了ＨＢＡ／ＰＥＴ及ＨＢＡ／ＰＥＴ／Ｈ１－ＴＰＡ液晶共聚酯。应用ＤＳＣ，偏光显微镜等对共聚酯性能进行了表征。结果表明：加入第三单体后，可以改善二元聚酯ＨＢＡ／ＰＥＴ的共聚反应条件，并且所有样品匀具有较大的特性粘度，较小的熔融热焓，二元体系的玻璃化转变较明显，加入第三单体后的三元共聚体系玻璃化转变消失，并且随着第三单体含量的增加，共聚酯熔点上升。
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| 关 键 词： | 液晶共聚酯 织态结构 HBA PET HQ－TPA 合成 |
The Synthesis and Characterization of liquid Crystalline Copolyester HBA/PET and HBA/PET/HQ-TPA |
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| Chen Yanmin Cao Zhenlin Zhang Zhiying Huang Meirong.The Synthesis and Characterization of liquid Crystalline Copolyester HBA/PET and HBA/PET/HQ-TPA[J].China Plastics Industry,1995,23(5):8-10,7. |
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| Authors: | Chen Yanmin Cao Zhenlin Zhang Zhiying Huang Meirong |
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| Abstract: | In this paper liquid crystalline copolyester HBA/PET and HBA/PET/HQ-TPA were synthesized by using melt-polyconden-sation method and characterized by DSC and polarizing microscope. The results showed that the addition of the third monomer HQ-TPA could make the reaction condition much moderate, and all of the samples had much higher intrinsic viscosity values and much less Hm values. The HBA/PET system had an apparent Tg transition , but for HBA/PET/HQ-TPA system , the Tg transition became unclear and Tm increased as the third monomer content increased. The quenching samples at a wide range of temperature had a typical nematic liquid crystalline texture under polatizing microscope. |
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| Keywords: | Liquid Crystalline Copolyester Nematic Liquid Crystal Thermotropic Liquid Crystal Textile Structure |
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